WordWeb Online

1. Someone injured or killed or captured or missing in a military engagement
    
2. Someone injured or killed in an accident
   - injured party
    
3. An accident that causes someone to die
   - fatal accident
    
4. A decrease of military personnel or equipment
    
5. [Brit] Emergency department in a hospital

Derived forms: casualties

Type of: accident, decrease, drop-off, fatality, human death, lessening, victim

Encyclopedia: Casualty